Ball-bearing.



No. 824,847. PATENTED JULY 3, 1906. R. CONRAD.

BALL BEARING.

APPLICATION FILED MAY 10, 1904.

- fl/ ww @LMYQ number of balls is combined wit UNITED STATES 'ATE FFICE.

ROBERT CONRAD, OF BERLIN, GERMANY.

BALL-BEARING.

Specificaticzi of Letters Patent.

Patented July 3, 1906.

To all whom it may concern:

Be it known that I, ROBERT CONRAD, engi neer, asub'ect of the GermanEmperor, residhelical springs are placed between the balls.

' These springs are attended with eat advantages, inasmuch as theypermit si ent working and the ball-bearings are rendered capable ofresisting heavy shocks, variations of pressure, and the like, and incase of faulty mountin they Work far better than bearings in Whic theballs run one alongside the other and in 7 direct contact with oneanother.

The invention is capable of adaptation to a great variety of types ofball-bearing.

Now the present nvention has for its object the construction of aball-bearing in which the advantage of insertin a greater I ht hatoffered by bearings having ball-separating devices,

' and, moreover, to obtain an advanta e not hitherto attained, butnevertheless 0 great imHortancethat is to say, to secure the ba bearingagainst tilting.

Inthe accom an drawings a ball-bearing constructe accor ing to theresent invention is illustrated as an exarnp e.

Figure 1 represents a front elevation of a particular construct-ion ofball-bearing according to this principle, and Fig. 2 is acrosssection-thereof.

Thislball-bearin consists of two rings a and b concentrica y arrangedwith relation to one another, each having a runninglsurface, path, orrace. The outer ring I) as a filling-aperture c, which may, forinstance,

consist, as shown in the drawings, of a space closed by a sliding platekept in its closing po-- sition by means of a screw. This sliding platewhen in its closing position completes the path of the outer ring, so asto fill up, the aperture. Through this aperture a great number of ballsand in some cases also the ball-separating devices may be betterintroduced than would be ossible if no such filling-aperture were empoyed; but, on the other hand, the disadvantage of an aperture must betaken into consideration. By

means of these ball-separating devices the pleriments have proved,notwithstanding the Hing-aperture they ossess, against the injuriouseffects of vi rations, variations of pressure, and shocks of all kinds,and also, as the case may be, a ainst the effects of careless mountinand t e injurious effects of tilting, which e cots are, as iswell-known, very detrimental to ball-bearin s. The bearing according tothis invention t erefore possesses all the ,advanta es afi'ordedby thefillingaperture in com ination with that of safety against tilting,which is very important, and against all the strains resulting fromtilting. In order to render the introduction of the ball-separatingdevices between v the rings feasible, it is necessary that said devicebe either capable of being deformed or of bein divided. The deformationmay be obtaine by making the device of an elastic kind, or the devicemay not be of such kind. In the latter case the alteration of shape maybe obtained by bending the device or by any other suitable method. Inthe exam le given the ball separating devices are 0 an elasticcharacter. They are formed by a continuous spring e of wire, wound likehelices or screws in the parts placed between theballs. Alsointermediate ball -separating devices of another shape or kind may ofcourse be used.

Various modifications may be made without departing from the invention,the scope of which is defined in the followin claims.

Having now particularly descri ed and ascertained the nature of the saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- 1. In ball-bearings in combination, two I parts havingrunning-surfaces, one of said.

parts having a filling-aperture serving for the introduction of balls,and ball-se arating devices connected serially to eac other and adaptedto be introduced through said aperture.

2. In ball-bearings in combination, two parts having running-surfaces,one of said arts having a filling-aperture serving for the introductionof balls, and ball-separating devices com rising spiral s ringsconnected to but space apart from eac other and adapted to be introducedthrough said aperture.

ROBERT CONRAD Witnesses HENRY HASPER, WOLDEMAB HAUPT ball-bearings willbe protected, as many ex-

